Renishaw RMP400

  • Product Name:​ RMP400 (QE) high-accuracy radio touch probe for CNC machine tools
  • Product Introduction:​ A compact, battery-powered spindle-mounted touch probe using frequency-hopping spread spectrum (FHSS) radio transmission for workpiece inspection, setup, and in-machine gauging on multi-tasking machines, machining centers, and gantry mills. Incorporates RENGAGE technology for ultra-low trigger force and 5-axis measurement capability.
Category:
Description
  • Technical Specifications:
    • Transmission: FHSS radio, 2400–2483.5 MHz
    • Operating range: up to 15 m to RMI-Q / RMI-QE receiver
    • Sense directions: ±X, ±Y, +Z
    • Unidirectional repeatability: 0.25 µm (2σ) with 50 mm stylus; 0.35 µm with 100 mm stylus
    • 2D form deviation: ±0.25 µm; 3D form deviation: ±1.00 µm (50 mm stylus)
    • Trigger force: ~0.07 N XY / ~3.34 N +Z (typical minimum)
    • Stylus overtravel: ±11° XY, 6 mm +Z
    • Min probe feedrate: 3 mm/min; max spindle spin: 1000 rpm
    • Batteries: 2× ½AA 3.6 V Li-SOCl₂; standby up to 37 months, continuous up to 230 h
    • Weight: 262 g with batteries, 242 g without
    • Body diameter 40 mm, length 50.5 mm
    • Environment: IPX8, IK01 (glass window), 5–55 °C operating, -25 to 70 °C storage
  • Functional Features:​ Radio on/off via M-code, spin-on, or timer; partnering with receiver without power cycling; compatible with high-modulus carbon fiber styli (50–200 mm); low pre-travel variation; eliminates surface damage on soft metals.
  • Application Scenarios:​ Job setup and datum finding, bore/feature measurement, 5-axis contour inspection, closed-loop tool offset correction.
  • Installation Requirements:​ Mount in spindle or probe-ready shank via M4 stylus thread; pair with RMI-Q/E interface; avoid China-band restriction (exempt); ensure antenna path within 15 m line-of-sight.
  • Usage Notes:​ Do not exceed 1000 rpm spin; replace batteries before standby expiry; calibrate trigger force per stylus length; protect glass window from coolant impact beyond IPX8 rating.
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